<template>
  <div class="login-container">

    <el-form
      class="login-form"
    >
      <div class="title-container">
        <h3 class="title">后台管理中心</h3>
      </div>
      <el-tabs v-model="activeName" type="card">
        <el-tab-pane label="密码登录" name="first">
          <el-form
            ref="loginForm"
            :model="loginForm"
            :rules="loginRules"
            auto-complete="on"
            label-position="left"
          >
            <el-form-item prop="username">
              <span class="svg-container">
                <svg-icon icon-class="user" />
              </span>
              <el-input
                ref="username"
                v-model="loginForm.username"
                placeholder="用户名"
                name="username"
                type="text"
                tabindex="1"
                auto-complete="on"
              />
            </el-form-item>

            <el-form-item prop="password">
              <span class="svg-container">
                <svg-icon icon-class="password" />
              </span>
              <el-input
                :key="passwordType"
                ref="password"
                v-model="loginForm.password"
                :type="passwordType"
                placeholder="密码"
                name="password"
                tabindex="2"
                auto-complete="on"
                @keyup.enter.native="handleLogin"
              />
              <span class="show-pwd" @click="showPwd">
                <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
              </span>
            </el-form-item>

            <el-button
              :loading="loading"
              type="primary"
              style="width:100%;margin-bottom:30px;"
              @click.native.prevent="handleLogin"
            >登录
            </el-button>
          </el-form>
        </el-tab-pane>
        <el-tab-pane label="验证码登录" name="second">
          <el-form
            ref="phoneLoginForm"
            :model="phoneLoginForm"
            :rules="phoneLoginRules"
            auto-complete="on"
            label-position="left"
          >
            <el-form-item prop="phone">
              <span class="svg-container">
                <svg-icon icon-class="user" />
              </span>
              <el-input
                ref="phone"
                v-model="phoneLoginForm.phone"
                placeholder="手机号"
                name="phone"
                type="text"
                tabindex="1"
                auto-complete="on"
              />
            </el-form-item>
            <el-row :gutter="24">
              <el-col :span="16">
                <el-form-item prop="verifyCode">
                  <span class="svg-container">
                    <svg-icon icon-class="password" />
                  </span>
                  <el-input
                    ref="verifyCode"
                    v-model="phoneLoginForm.verifyCode"
                    type="text"
                    placeholder="验证码"
                    name="verifyCode"
                    tabindex="2"
                    auto-complete="on"
                  />
                </el-form-item>
              </el-col>
              <el-col :span="8">
                <el-button type="primary" class="send_btn" @click.native.prevent="sendVerify">发送验证码</el-button>
              </el-col>
            </el-row>
            <el-button
              :loading="loading"
              type="primary"
              style="width:100%;margin-bottom:30px;"
              @click.native.prevent="handlePhoneLogin"
            >登录
            </el-button>
          </el-form>
        </el-tab-pane>
        <el-tab-pane label="钉钉扫码" name="third">
          <el-button
            :loading="loading"
            type="primary"
            style="width:100%;margin-bottom:30px;"
            @click.native.prevent="handleLogin"
          >去钉钉扫码登录
          </el-button>
        </el-tab-pane>
      </el-tabs>
    </el-form>
  </div>
</template>

<script>
import { validUsername, validPhone } from '@/utils/validate'
import { sendVerityCode } from '@/api/user'

export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('请输入用户名'))
      } else {
        callback()
      }
    }
    const validatePhone = (rule, value, callback) => {
      if (!validPhone(value)) {
        callback(new Error('请输入正确的手机号'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码至少六位'))
      } else {
        callback()
      }
    }
    const validateVerifyCode = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('验证码至少六位'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        username: '',
        password: ''
      },
      phoneLoginForm: {
        phone: '',
        verifyCode: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }]
      },
      phoneLoginRules: {
        phone: [{ required: true, trigger: 'blur', validator: validatePhone }],
        verifyCode: [{ required: true, trigger: 'blur', validator: validateVerifyCode }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined,
      activeName: 'first'
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/login', this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || '/' })
            this.loading = false
          }).catch(() => {
            this.loading = false
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    sendVerify() {
      sendVerityCode(this.phoneLoginForm.phone).then(response => {
        this.$message.success({
          type: 'success',
          message: '发送成功'
        })
      })
    },
    handlePhoneLogin() {
      this.$refs.phoneLoginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/phoneLogin', this.phoneLoginForm).then(() => {
            this.$router.push({ path: this.redirect || '/' })
            this.loading = false
          }).catch(() => {
            this.loading = false
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg: #283443;
  $light_gray: #fff;
  $cursor: #fff;

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  .send_btn {
    margin-top: 6px;
  }

  .el-tabs__item {
    color: white;
  }

  /* reset element-ui css */
  .login-container {
    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        background: transparent;
        border: 0px;
        -webkit-appearance: none;
        border-radius: 0px;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0px 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(0, 0, 0, 0.1);
      border-radius: 5px;
      color: #454545;
    }
  }
</style>

<style lang="scss" scoped>
  $bg: #2d3a4b;
  $dark_gray: #889aa4;
  $light_gray: #eee;

  .login-container {
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }

    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      position: relative;

      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0px auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
    }

    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
</style>
